Chapter 2 Review

Adding Unlike Fractions and Mixed Numbers

100

What is 1/3 + 1/4 ?

7/12

200

What is 2/5 + 1/10?

1/2

300

What is 2/4 + 1 1/12?

2 1/4

400

What is 2 1/3 + 1/6?

2 1/2

500

What is 1 1/2 + 2 2/5?

3 9/10

Subtracting Unlike Fractions and Mixed Numbers

100

5/6 - 1/3

1/2

200

3/4 - 1/2

1/4

300

3 1/2 - 1 1/4

2 1/4

400

4 2/5 - 2 3/10

2 1/10

500

2 3/8 - 1 5/12

23/24

Real World Problems

100

 If you have 3 1/2 yards of fabric and use 1 1/4 yards, how much fabric do you have left?

2 1/4 yards of fabric is left.

200

You baked 2 1/3 pies and sold 1 2/5 pies. How many pies remain?

14/15 pies remain.

300

John drank 5/8 of his juice and then 1/4. How much juice did he drink in total?

John drank 7/8 of his juice.

400

If a recipe calls for 2 1/2 cups of flour and you only have 1 1/3 cups, how much more do you need?

You need 1 1/6 more cups of flour.

500

A car traveled 1 3/4 hours on one trip and 2 1/2 hours on another. What is the total travel time?

4 1/4 hours is the total travel time.

Estimating using benchmark fractions

100

Estimate using benchmark fractions:

2/3 + 3/5

2/3 --> 1

3/5 --> 1/2

1 + 1/2 = 1 1/2

200

Estimate using benchmark fractions:

7/8 + 1/5

7/8 --> 1

1/5 --> 0

1 + 0 = 1

300

Estimate using benchmark fractions:

2/3 - 1/2

2/3 --> 1

1/2 --> 1/2

1- 1/2 = 1/2

400

Estimate using benchmark fractions:

5/6 + 3/8

5/6 --> 1

3/8 --> 1/2

1 + 1/2 = 1 1/2

500

Estimate using benchmark fractions:

11/12 - 5/6

11/12 --> 1

5/6 --> 1

1-1=0